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Finding the Fourth Proportional to 66,580.53, 99,870.79 and 16,660.63

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Solution

The fourth proportional to 66,580.53, 99,870.79 and 16,660.63 is: 24,990.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,580.53 : 99,870.79 = 16,660.63 : x
  2. Step 2: Convert to fraction form
    66,580.53/99,870.79 = 16,660.63/x
  3. Step 3: Cross multiply
    66,580.53x = 99,870.79 × 16,660.63
  4. Step 4: Simplify right side
    66,580.53x = 1,663,910,280.00
  5. Step 5: Solve for x
    x = 1,663,910,280.00/66,580.53
  6. Step 6: Final answer
    x = 24,990.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.